Shoe-pounding machine



June 5, 1928.-

E. E. WINKLEY SHOE POUNDING MACHINE Patented June 5, 1928.

PATENT OFFICE.

UNITED STATES ERASTUS E. WINKLEY, OF LYNN, MASSACHUSETTS, ASSIG'NORTO UNITED SHOE MA- CHINERY CORPORATION, OF

JERSEY. e

PATERSON, NEW JERSEY, A CORPORATION on NEW SHOE-POUNDING MACHINE.

Application filed May 12, 1925. Serial No. 29,730.

.This invention relates to shoe-pounding machines.

welt and the upper of awelt shoe or be tween the sole and the upper in the cas of a shoe which does not have a welt, this crease being usually termed the welt crease re gardless of whether the shoe is provided with a welt. This operation is customarily effected by pounding or beating the margin of the sole toward the last. Since the present invention has been developed as the result of efl'orts on my part to provide an improved pounding machine adapted to close the welt crease in the shank of a shoe, the invention is herein illustrated and described with special reference to this problem. It is recognized, however, that in various aspects the invention is not limited to embodiment in machines designed for shoe bottom beating or pounding, but may be embodied to advantage in machines having operating tools designed" and adapted for other purposes.

The pounding machines designed for heat ing the shank portions of shoe soles to produce the close shank effect above reterred to have usually been provided with rotary tools each having a plurality of beating projections. In the use of such machines, the shoe is held up to the action of the rotary beating tool by the operators hands and he has to exert a good deal of strength in order to obtain the desiredpounding action upon the sole. Moreover, holding the shoe manually against the rapidly rotating beating tool causes violent vibration of the shoe. I For the purpose of reducing the fatigue resulting from the conditions just stated, it is an object of this invention to provide a machine adapted to welt crease is operated by a relatively massive hammer. Thus, when the tool is actuated by the hammer, it absorbs but little of the momentum of the hammer. Moreover, the illustrated hammer is spring-impelled in addition to being influenced by gravity when suddenly releasedby a drop cam. The sharp blows of the heavy hammer so produced are transmitted by the tool to the work with but slight diminution since the mass of the tool is relatively small and the inertia of the shoe last is sufficient to absorb the force of the blows largely or wholly, so that there is no objectionable displacement of the shoe. The tool not only delivers sharp, quick blows, but these blows are so timed as to permit the work to recover considerably if not fully from the displacing effect of each blow before the next blow is struck. Moreover, to limit the endwise movement of thetool under the influence of the hammer, the illustrated beating tool carries a stop adapted to engage the frame if, in any given instance, the force of the blow is not substantially absorbed by the tool tends to displace the work only a short,

distance, and. this further lessens objectionable vibration. As a further advantage, it -will be observed that the hammer is inoperative unless the work is presentedto it. Advantageously too, a: member of largerarea than the beating tool may be introduced between it and the work. As. illustrated, a steel plate having one end with its edge upturned is disposed beneath the tool memher, the other end of the plate being adjustably secured to the machine; This plate etfectively transmits the action of the tool to. the work. .7 I

These and other features of the invention will appear more fully from the following 1 in case the force of the blow detailed description when read in connection with the accompanying drawing and willbe pointed outin the appended claims.

In the drawing:

F l s ;1?e P i" Vi w of he h of a machine embodying this invention, the front cover plate being partly removed;

Fig. 2 is a Vertical section ofthe machine head taken from front to rear; and

Fig. 3 is a sectional viewof a shoe being treated by the operating instrumentalities of the machine.

In'thedrawing, the numeral 2 indicates the frame of the machine head which is secured to the top of a column f resting on the floor and=of suitable height so thatthe operator may present ashoe in his hands to the operating instrumentalities'of the machine. A shaft 6 is journaled in the frame 2 and provided at one end outside thecasing with a pulley 8 to which power maybe applied. 'Onthe shaft (3 within the casing is a drop cam 10 which acts on a'roll 12 carried by'ahammer member 14 which is pivoted between its ends on a shaft 16. The forward arm of-the hammer member 14 is massive and forms a hammer head 18. The head 18 is raised by the action of the-cam upon the roll 12 and when released is impelled downwardly by gravity and by a spring 20 engaging at one end a stud 22 on the hammer member 14 about midway between its pivot 16 and the head 18. A rod 24- having a flange 26 is introduced into the oppositeend of the spring20, the rod 24 having a recess in its upper end which is engaged by the rounded end of a screw 28,'this constructionpermitting the required movement of thespring during the operation of the hammer member. Tension ofthe spring maybe varied by adjusting the screw 28, the adjusted position of whiclrmay be maintained by a set-nut 3 0.

Beneath-the'head 18 of the=hammer and arranged for verticalreciprocation is a tool member 40. Forthesake of lightness the member 40 is'made hollow, as'shown in Fig. 1, and being thus of small inertia readily acquires the velocity of the hammer member and transmits its momentum to the work, The upper end of the tool member 40 is pro. vided with a collar 42 which prevents it from dropping out of its guideway inthe head and provides a stop'to arrestthe'tool is not 'entirely absorbed by the work.

On the rear face of the member 40 is a recess M which is engaged by one'arm 46 of a three-armed lever pivoted at as, the arm 46 extending through an opening in the guideway of themember 40 and entering the re cess 44. Another arm 50- of the three-armed lever is offset from the axis 48 so that one sideo'fthe arm 50 is in linewith'the axis about which it turns. The arm 50 isarthat position.

sired close shank effect.

tion shown to maintain the hammer in raised.

position by a spring 54: located between a third arm 56 and. the machineframe, It will be evident that, upward pressure upon the tool member 40 will cause the arm 50 to swing out frombeneath the stop-screw 52 to release the hammer and that thereafter the cam 10'will be effective to raise and release the hammer member the blows of which will be delivered to the'tool member 40 and transmitted thereby to work held beneath the tool member, such actioncontinuinguntil the upward pressure on thetool member is released, whereupon the spring 54 will act to swing t-he'arm 50 beneath the-screwand arrest the hammer member in itselevated position when next raised.

It is to be understood. of course, that the work may be presented directly to t-he lower end of the tool'member*4;0. Howeverysince the area of the end of the tool member is rather small, it is desirable undersome conditions of work to provide beneath the toolmems her a member of larger area by which the effect of the tool member is distributed and any possible marring or marking of the work avoided. As shown. alight plate 60 extends beneath the end of the 'tool member 40 and has its edges upturned to prevent marring the work. The plate 60 isupwardly bent, back of the tool member, and has its rear end adjustably secured by screws 61 to a block 62 pivoted at 64 to, a screw '66 threaded through the "frame and having its inner end arranged to provide anchorage for the spring 54;. Back of the pivot'fia is an extension 68 of the block 62 to'which is threaded an adjusting screw 70. provided with a set-nut 72.

In using the machine, the operator presents the work held in his hands, substantially asindicated in Fig. 3, to the operating instrumentalities 40, 60 of the machine and presses the shoe upward. This lifts the plate 60 and tool member 40, releases the latch 50 and allows percussional impulses of the hammer member 14, 18 to be delivered to the'tool member 40 and transmitted-thereby through the plate'GO t0 the work. The direct blows thus'delivered to the shoe are ef fective in bending and shaping the margin of the sole to close the welt crease and cause it, by repeated hannnerings, to remain in Since the blows are delivered directly downward 1n a predetermined direction, the

operator can, by manipulating the sli0e,"control the action of the tool and obtain the detained with less effort because'the force of the blow is absorbed by the inertia of the This result is ob Inn last with comparatively little sustaining effort on the part of the operator, and since but littledisplacement of the shoe is possible because of the small distance the tool member is lifted to set the hammer member in operation. the vibration imparted to the work by rapidly repeated blows is not great.

In operating on shoes provided with a channel flap that has not been laid the plate 60 will be used as a guide by being pressed against the base of the channel flap as the shoe is moved along.

Having thus described'my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a shoe pounding machine, the combination of a pounding tool mounted for vertical reciprocation, a stop for said tool, and

spring-impelled hammer a power operated impulses to the for imparting percussional tool to force the tool toward the stop when raised by the work. i

2. In a machine of theclass described, the combination of a frame, a tool arranged for vertical reciprocation in the frame, a stop on the tool engaging the frame to limit movement of the tool, the tool being movable by the work to space the stop from the frame, and a spring-impelled hammer arranged to be raised and suddenly released to strike a sharp blow upon the tool, movement of the tool by the hammer being limited by said stop.

8. In a machine of the class described, the combination of a spring-impelled hammer, means for raising and releasing the hammer, a reciprocating member unconnected to the hammer arranged in the path of the hammer, and a stop for limiting movement of the member by the hammer, said member being movable by the work away from the stop.

4. In a machine of the class described, the combination of a rigid frame, a tool of little inertia arranged for reciprocation in the frame, a stop on the frame engaged by the tool to limit movement of the tool, the tool being positioned away from the stop during operation of the machine, a momentum member of large mass relatively to the tool, and spring means for imparting a high velocity to said member to cause it to strike a sharp blow upon the tool, movement of the tool by the momentum member being limited by said stop. I

5. In a machine of the class described, the combination of a spring-impelled momentum member, a light reciprocating tool member arranged in the path of the momentum member and unconnected thereto, and a stop for limiting movement of the tool member by the momentum member, the tool being moved away from the stop to receive the impulse of the momentum member.

6. In a shoe pounding machine, a rigid frame, a light pounding tool member ar- 7. In a shoe pounding machine, thecom- 'bination of a rigid frame, a pounding tool of little inertia arranged forreciprocation in the frame, a stop on the tool engaging the frame to limit movement of the tool, the tool being movable by the shoe to space the stop from the frame, a momentum member of large mass relatively to the tool, means for imparting a high velocity to said member to cause it to strike a sharp blow upon the tool, and means for preventing operation of the momentum member unless a shoe is presented to the tool. 1

8. In a machine of the class described, the combination of a spring-impelled moment-um member, a light reciprocating tool member arranged in the path of the momentum member and unconnected thereto,-and a stop for limiting movement of the tool member by the momentum member, said tool member being movable by the work toward the lIlO- mentum member.

9. In a shoe pounding machine, a rigid frame, a light tool member arranged for reciprocation in the frame, a spring-impelled momentum member arranged to be raised and released to strike a sudden blow upon the tool member, and means for limiting movement thus imparted to the tool member, said tool member being displaceable-toward the momentum member by the shoe.

10. A shoe pounding machine having, in

combination, a tool mounted for vertical rev ciprocation, a power operated oscillating hammer for imparting percussional imimpulses to the tool, means for rendering the hammer inoperative, and means operated by movement of the tool for rendering the hammer operative.

11. A shoe pounding machine having, in combination, a power operated cam, a hammer arranged for operation by said cam, means for holding the hammer out of operative relation to the cam, a tool to receive percussional impulses from the hammer, and means operated by movement of the tool for rendering the hammer holding means inoperative.

12. In a shoe pounding machine, the combination of a reciprocating tool, oscillating means for imparting vpercussional impulses to the tool, and a plate fixed as to movement transversely of the path of the tool located between the tool and the work for distributing the effect of the tool.

13. In 'a shoe pounding machine, the combination of a hammer lever pivoted between its ends, a power operated cam acting on one end of the hammer lever, a latch for up- .holdingthepther end ofthe ha mmenlever when lifted'by thecam,and means'operated hy the-work for moving the latch to permit operation of the hammer.

14:. Ashoe pounding nmehine having, in combination, a hammer lever pivoted 'betweenits ends, a power operated cam acting on one-end'of the hammer lever, a latch for upholding the other end of the hammer lever whendifted-by the cam, a tool of small in- 10 ertiamounted for reciprocating movement in the path of the hammer lever, and connections for releasing the latch upon movement of the tool by the Work.

In testimony whereof I have signed my 15 name to this specification.

ERASTUS E. WINKLEY. 

